Marzocchi Gear Pump Series Catalog

1. ALP Series (High-Pressure Standard Gear Pumps)

Core Technical Parameters

• Displacement Range: 1.4 ~ 200 cc/rev (varies by ALP1/ALP2/ALP3/ALP4 frame sizes)
• Max Continuous Working Pressure: 230 ~ 250 bar
• Max Intermittent Pressure: 260 ~ 270 bar
• Max Peak Pressure: 290 bar
• Rated Speed Range: 2800 ~ 6000 rpm (depends on frame size and medium)
• Operating Temperature: -40°C ~ +80°C
• Port Standard: SAE J1926/1, ISO 11926-1 threaded ports / SAE flange ports
• Rotation Direction: Clockwise / Counterclockwise (customizable)

Series Classification

• ALP1: Miniature high-pressure pump, displacement 1.4~13.8 cc/rev, max speed 6000 rpm
• ALP2: Small high-pressure pump, displacement 4.5~35.2 cc/rev
• ALP3: Medium high-pressure pump, displacement 20~80 cc/rev
• ALP4: Large-flow high-pressure pump, displacement 80~200 cc/rev

2. GHP Series (High-Efficiency High-Pressure Gear Pumps)

Core Technical Parameters

• Displacement Range: 1.4 ~ 90.5 cc/rev
• Max Working Pressure: Up to 310 bar (peak pressure)
• Operating Temperature Range: -40°C ~ +80°C; stable pressure output at -10°C ~ +80°C
• Inlet Pressure (TR Version): Max 6 bar absolute pressure
• Max Speed: Up to 6000 rpm (GHP1); 4000 rpm (GHP2/GHP3)
• Optional Configuration: Built-in relief valve (VM version), low-viscosity fluid special version

Series Classification

• GHP1: 1.4~13.8 cc/rev, ultra-high speed, miniature compact design
• GHP2: 4.5~35.2 cc/rev, balanced pressure and flow performance
• GHP3: 35~90.5 cc/rev, large flow industrial grade

3. ELIKA Series (Low-Noise Helical Gear Pumps, ELI2/ELI3)

3.1 ELI2 Series Parameters

• Displacement Range: 7.0 ~ 35.0 cc/rev
• Max Continuous Pressure: 50 bar (low-medium pressure)
• Features: Ultra-low noise, low vibration, smooth fluid delivery
• Application: Precision automation, medical equipment, low-noise industrial systems

3.2 ELI3 Series Parameters

• Displacement Range: 20.4 ~ 87.1 cc/rev
• Max Working Pressure: Consistent with GHP high-pressure standard, up to 250 bar continuous pressure
• Interchangeability: Fully interchangeable with ALP3/GHP3 series mounting dimensions
• Advantages: High pressure resistance + low noise dual performance

4. FCIP/FCIM Series (Full Cast Iron Gear Pumps & Motors)

Core Technical Parameters

• Displacement Range: 4.50 ~ 90.50 cm³/rev (0.27 ~ 5.49 in³/rev)
• Structural Feature: Integral cast iron body, anti-impact, anti-leakage
• Applicable Medium: Standard hydraulic oil, low-viscosity fluid (optional)
• Working Condition: Long-term heavy-load continuous operation

Series Classification

• FCIP2/FCIM2: Small cast iron pump/motor
• FCIP3/FCIM3: Medium cast iron pump/motor
• FCIP4/FCIM4: Large-flow heavy-duty cast iron pump/motor

5. Low-Pressure Standard Series (General Industrial Gear Pumps)

• Displacement Range: 7 ~ 87.1 cm³/rev
• Max Working Pressure: 50 bar
• Port Type: G1” threaded port / 1 5/16-12 UNF port (optional)
• Optional Parts: External relief valve, special shaft and flange specifications
• Application: Conveyor equipment, light industrial machinery, general hydraulic stations

6. Universal General Technical Specifications

• Fluid Viscosity Range: 10 ~ 100 cSt (standard); 3~10 cSt (low-viscosity customized version)
• Filtration Requirement: Minimum 25 μm filtration accuracy for standard operation
• Mounting Forms: SAE standard flange, foot mounting, customized mounting
• Shaft Types: Cylindrical shaft, spline shaft, tapered shaft (optional)
• Sealing Material: NBR (standard), FKM (high-temperature customized)

7. Series Application Comparison

• ALP/GHP Series: High-pressure scenarios, engineering machinery, hydraulic power units, precision industrial equipment
• ELIKA ELI2/ELI3 Series: Low-noise requirement scenarios, medical, food, automation precision equipment
• FCIP/FCIM Series: Heavy-duty machinery, metallurgy, mining, high-vibration harsh working conditions
• Low-Pressure Series: General light industrial equipment, conveying systems, auxiliary hydraulic circuits